Process of making printing-ink.



1106. COMPOSITIONS,

MAX WOLFE, OF SOUTHWABK, LONDON, ENGLAND.

PROCESS OF MAKING- PRINTING-INK.

1,094,288. Specification of Letters Patent.

No Drawing.

To all whom it may concern Be it known that I, Max Wonrr, a citizen of the United States of America, residing at 89 Sumner street. Southwark, in the county of London, England, manufacturer, have invented a new and useful Process of Making Printing-Ink, of which the following is a specification.

This invention relates to the manufacture of printing ink and its object is to reduce the cost of production by the employment of inexpensive raw materials as substitute ingredients and by reducing the quantities of high priced materials hitherto employed.

I have found that ordinary peat under certain treatment offers an excellent substitute for the various formsof carbon generally used in printing ink processes and this discovery forms broadly the pith of my invention. Instead of peat, other fibrous vegetable materials may be used if rendered peatlike by semi-carbonization at the same time suitably varying the process indicated herebelow.

In carrying out the process with peat it is necessary to eliminate the iron, lime, magnesia and the 1'6 commo y con aine 1p peat which may be done by suB ect-mg the w L r moist peat to pressure and drawing off the water, which carries with it the greater part of the iron, lime, magnesia and the like. The second step is the preparation of a bath with one or more silicates of one or more alkali etals preferably slllcate of soda of V1SCO11 S consistency and of a denslty If about 100 Twaddell. The proportion may vary considerablybut 10 lbs. of such silicate of soda to about gallons of water has been found eificient. It is advantageous to add the silicate gradually to the boilin water with continuous stirring. The nexi step is to add to the bath about 3 to 6 per cent. by weight, of ve etable black, continuing the stirring and maintaining the temperature at 100 C. or thereabout. In the next or fourth step the ressed eat is added to the bath and boil eil for say 30 to 60 minutes more or less till it partly llquefies and partly forms a strong paste; The liquid 50 part may then be drawn ofi for further use and the 111 -like residue which consists mostly oi loosened or dissolved fiber is strained and then mixed with suitable oils, for instance inseed, resin, and like oils, be-

fore and after W 105 product obtained may be ground in an ordinary printing mk Cross He'rcrence Application filed April 28, 1913. Serial No. 764,176.

- Patented Apr. 21, 1914.

2 3 5 mill or in any other convenient manner to insure evenness and uniformity. Instead of part or the whole of the resin and like oils, I can use the residues of distillation of petroleum if necessary mixed with more volatile hydrocarbon or I may use crude petroleum.

Steps 3 and 4 may be interchanged and numerous othermodifications of the method described are admissible without departing from the nature of the invention.

Of the relatively expensive oils and varnishes and black pigments much less is required by my process than by. ordinary methods.

A number of other partially carbonized vegetable fibers may be employed as equivalents of the peat and as pigments or thickening materials and the purifying. solving Examiner 6. A process of 'making a printing ink,.

consisting in pressing peat, drawing off the liquid therefrom, preparing a bath of an alkaline silicatea-nd water, adding a pigment to said bath, adding the pressed peat to said bath, boiling said peat in said bat-h, drawing ofl1' the liquid from said peat, mixing said drained peat with oil, and grinding the mixture.

7. A process of making a printing ink, consisting in pressing peat, drawing off the liquid therefrom, preparing-a bath of sodium silicate and water at an elevated tem- "erature, addin vegetable black to said ath, adding t' e pressed peat to said bath. boiling said peat in said bath, drawing ofi the liquld from said peat, mixing sai drained peat with oily matter derived from petroleum, and grinding the mixture.

8. A process of making a printing ink, consisting in pressing peat, drawing off the liquid therefrom, preparing a bath of so;

dium silicate and water at an elevated temperature, adding vegetable black to said ath, adding the pressed peat to said bath,

boiling said eat in said ath, drawing off 5 the liguid om said peat, mixin said drain peat with oily matter derive from petroleum, and resin oil, and grinding the mixture.

9. A process of making a printing ink,

10 consisting in pressing peat, drawing off the liquid therefrom, preparing a bath of sodium silicate and water at an elevated tem- MAX WOLFF.

Witnesses ERNST TAPPERT, H. D. JAMISON. 

